<!-- subpkg_medicine/payment/index.vue -->
<script lang="ts" setup>
  import { addressListApi, createOrderApi, preOrderApi } from '@/apis/order'
  import { orderPayApi } from '@/apis/user'
  import type { Address, OrderPre } from '@/types/order'
  import { ref } from 'vue'

  // 1. 收货地址信息
  const addressInfo = ref({} as Address)
  // 用户收货地址
  const getAddressList = async () => {
    // 地址列表接口
    const data = await addressListApi()
    // 渲染地址列表数据
    addressInfo.value = data[0]
  }
  // 获取收货地址列表
  getAddressList()
  // 2. 预定单信息
  const props = defineProps<{ id: string }>()
  // 预付订单信息
  const preOrderInfo = ref({} as OrderPre)
  // 药品预付订单
  const getPreOrder = async () => {
    if (!props.id) return
    // 预付订单接口
    const data = await preOrderApi(props.id)
    // 渲染预付订单信息
    preOrderInfo.value = data
  }
  getPreOrder()
  // 3. 待支付订单ID
  const orderId = ref('')
  // 支付渠道组件实例
  const paymentRef = ref()

  const onPaymentConfirm = async (index: number) => {
    if (index === 0) return uni.showToast({ title: '暂不支持微信支付!' })
    // 调用后端提供的支付接口
    const data = await orderPayApi({
      orderId: orderId.value,
      paymentMethod: index,
      payCallback: 'http://localhost:5173/#/subpkg_medicine/pay_result/index',
    })
    // 支付宝支付页面
    window.location.href = data.payUrl
  }

  // 关闭支付渠道弹层
  const onPaymentClose = () => {
    paymentRef.value.close()
  }

  // 选择支付渠道
  const onPaymentButtonClick = async () => {
    if (orderId.value === '') {
      // 生成待支付订单接口
      const data = await createOrderApi(props.id, addressInfo.value.id)
      // 传递订单ID
      orderId.value = data.id
    }
    paymentRef.value.open()
  }
</script>

<template>
  <scroll-view background-color="#f6f6f6">
    <view class="medicine-page">
      <view class="page-header">
        <view class="order-shippment">
          <view class="region">
            <uni-icons size="16" color="#FF7702" type="location-filled" />
            {{ addressInfo.province }} {{ addressInfo.city }}
          </view>
          <view class="detail">{{ addressInfo.addressDetail }}</view>
          <view class="receiver"> {{ addressInfo.receiver }} {{ addressInfo.mobile }} </view>
        </view>
      </view>

      <view class="order-shop">
        优医药房
        <text class="alt">优医质保 假一赔十</text>
      </view>
      <!-- 药品列表 -->
      <view class="medicine-list">
        <view
          v-for="medicine in preOrderInfo.medicines"
          :key="medicine.id"
          class="medicine-list-item"
        >
          <image class="medicine-cover" :src="medicine.avatar" mode="aspectFill" />
          <view class="medicine-info">
            <text class="name">{{ medicine.name }}</text>
            <text :class="{ symbol: medicine.prescriptionFlag === '1' }">
              {{ medicine.specs }}
            </text>
            <text class="price">¥{{ medicine.amount }}</text>
          </view>
          <view class="quantity">x{{ medicine.quantity }}</view>
          <view class="guide">用法用量：{{ medicine.usageDosag }}</view>
        </view>
      </view>

      <!-- 订单信息 -->
      <view class="order-info">
        <uni-list :border="false">
          <uni-list-item title="药品金额" :right-text="'¥' + preOrderInfo.payment" />
          <uni-list-item title="运费" :right-text="'¥' + preOrderInfo.expressFee" />
          <uni-list-item
            title="优惠券"
            show-arrow
            :right-text="'-¥' + preOrderInfo.couponDeduction"
          />
          <uni-list-item title="实付款" :right-text="'¥' + preOrderInfo.actualPayment" />
        </uni-list>
      </view>

      <!-- 底部 -->
      <view class="toolbar">
        <view class="total-amount">
          需付款: <text class="number">¥{{ preOrderInfo.actualPayment }}</text>
        </view>
        <view class="buttons">
          <button class="uni-button" @click="onPaymentButtonClick">立即支付</button>
        </view>
      </view>
    </view>
  </scroll-view>
  <custom-payment
    @close="onPaymentClose"
    @confirm="onPaymentConfirm"
    :amount="preOrderInfo.actualPayment"
    :order-id="orderId"
    ref="paymentRef"
  />
</template>

<style lang="scss">
  @import './index.scss';
</style>
